How we review

Every comparison follows the same checklist, and we say plainly when something is a company claim rather than an independent finding.

1. Official pages first. Price, session length, battery, app and subscription terms, warranty and return policy are taken from the seller's own pages on the date shown at the top of the article.
2. Independent testers. We read hands-on reviews from outlets such as Innerbody, Tom's Guide, Wareable, Cybernews, Healthline and TechRadar and summarise what they found, including negative verdicts.
3. Customer reviews. We report the Trustpilot score and review count and the recurring complaint themes.
4. Research. Where published studies exist we cite them and describe their limits in plain language.
5. Hidden costs. Subscriptions, consumables, return shipping and "sale" anchors are called out.

Firsthand testing: when we have used a product ourselves we say so explicitly. Where a page does not say that, we have not.

If a fact on this site is out of date, tell us and we will correct it.